Results 11 to 20 of about 233,279 (344)

STRUCTURES OF LOCAL GALAXIES COMPARED TO HIGH-REDSHIFT STAR-FORMING GALAXIES [PDF]

open access: bronzeThe Astronomical Journal, 2009
Accepted by The Astronomical Journal May 2009.
Petty, Sara M.   +6 more
openaire   +4 more sources

Galaxy Formation Theory [PDF]

open access: yesPhysics Reports, 2010
We review the current theory of how galaxies form within the cosmological framework provided by the cold dark matter paradigm for structure formation. Beginning with the pre-galactic evolution of baryonic material we describe the analytical and numerical
Abadi   +563 more
core   +3 more sources

The Galaxy Structure-Redshift Relationship [PDF]

open access: yes, 2004
There exists a gradual, but persistent, evolutionary effect in the galaxy population such that galaxy structure and morphology change with redshift. This galaxy structure-redshift relationship is such that an increasingly large fraction of all bright and
A Graham   +49 more
core   +3 more sources

The Distribution of Open Clusters in the Galaxy

open access: yesFrontiers in Astronomy and Space Sciences, 2021
In this work we explore the new catalog of galactic open clusters that became available recently, containing 1,750 clusters that have been re-analyzed using the Gaia DR2 catalog to determine the stellar memberships.
Hektor Monteiro   +3 more
doaj   +1 more source

The Quest for the Nature of the Dark Matter: The Need of a New Paradigm

open access: yesAstronomy, 2023
The phenomenon of the Dark matter baffles the researchers: the underlying dark particle has escaped so far the detection and its astrophysical role appears complex and entangled with that of the standard luminous particles.
Fabrizio Nesti   +2 more
doaj   +1 more source

The Principle of Maximum Entropy and the Distribution of Mass in Galaxies

open access: yesUniverse, 2022
We do not have a final answer to the question of why galaxies choose a particular internal mass distribution. Here we examine whether the distribution is set by thermodynamic equilibrium (TE).
Jorge Sánchez Almeida
doaj   +1 more source

Quantitative Morphology of High-Redshift Galaxies Using GALEX Ultraviolet Images of Nearby Galaxies [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2017
We present simulations of the optical-band images of high-redshift galaxies utilizing 845 near-ultraviolet (NUV) images of nearby galaxies obtained through the Galaxy Evolution Explorer (GALEX). We compute the concentration (C), asymmetry (A), Gini (G),
Bum-Suk Yeom   +6 more
doaj   +1 more source

STRUCTURAL PARAMETERS OF GALAXIES IN CANDELS [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2012
public data release of structural parameters from CANDELS WFC3 data: http://www.mpia-hd.mpg.de/homes/vdwel/candels ...
van der Wel, Arjen   +21 more
openaire   +4 more sources

Warm Dark Matter Galaxies with Central Supermassive Black Holes

open access: yesUniverse, 2022
We generalize the Thomas–Fermi approach to galaxy structure to include central supermassive black holes and find, self-consistently and non-linearly, the gravitational potential of the galaxy plus the central black hole (BH) system.
Hector J. de Vega, Norma G. Sanchez
doaj   +1 more source

JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST

open access: yesThe Astrophysical Journal Letters, 2023
With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies.
Erica J. Nelson   +25 more
doaj   +1 more source

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